safeway. ingredients for life. >>> happening now, fire investigation under way into a stubborn trash fire burning all night long in san francisco broke out about 9:00 last night in a warehouse on tunnel avenue on the other side of highway 101 from candlestick park. chase cain live at the scene. it appears crews are starting to wrap things up. >> reporter: yeah, the police midwest a bit ago opening up the roads in the area. firefighters left a little while ago as the fire is really just sort of wrapping up. the last few smoldering bits of the fire are out now. you mentioned that we are across from candlestick park. that is sort of ironic because this trash pile was the size of a football field, 100 yards long, eight feet deep so that has a thick pile of trash. it was mostly scrap building materials that caught on fire, pieces of lumber and sheetrock. because it was packed so tightly in this warehouse it made it difficult for san francisco firefighters to really get in there and get this fire ou